It's more numbers than which neighborhoods.Keep in mind that Realtors really can't tell you this is a good place and this is a bad place. 

@Roger Garner all of the above give you great ways to find GCs, but HOW will you screen the bad from the good?

That doesn’t mean they’re bad tenants—many are just trying to provide stability for their families—but it does mean you need to be extra diligent with screening.

Besides, anybody can just come and take whatever they want, I would not have any proof.I would like to get my keys back by giving them a legitimate reason without getting our relationship gone bad. 

So, they shouldn't be stuck in a bad situation. 2.

There are going to be some very small pockets you'd probably want to avoid, but even those aren't that bad compared to other cities' bad areas.

Does it mean its a bad deal? 

Well, the first problem they have is that the code of ethics of the NAR, as well as most state licensing laws, requires the licensee to treat anybody they deal with “openly and honestly”.  

A good PM can help protect you from a bad decision.

Get one bad tenant and you could lose three years worth of cash flow very easily.2.